Suggestions for code provide reading QR code with camera works on desktop(not mobile)

Question

I need to read QR code with camera on desktop (not mobile) but that is not applet.(Why can not I choose applet so chrome will withdraw its support).I prefer java or javascript code.

help please

Answer 1

This is what Google gave me -

1. Open Source QR Code Library That seems to be the name. GPL licensed and has integration with Java
2. ZBar bar code reader supports QR code. has the more flexible LGPL license but seems to have API support only for Python, Perl, C++?